Clean Water Act discharge permit · NPDES MOR203320
MISSOURI METALS DIV OF SAMUEL SON CO, St. Louis, MO: NPDES MOR203320 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
MISSOURI METALS DIV OF SAMUEL SON CO, held by METAL SPINNERS, INC, holds NPDES permit MOR203320, which discharges to Tributary To River Des Peres. EPA’s file records it issued October 22, 2019 and expiring August 31, 2024. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | MISSOURI METALS DIV OF SAMUEL SON CO |
|---|---|
| Permittee as filed | METAL SPINNERS, INC |
| NPDES ID | MOR203320 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Program | Industrial stormwater |
| Issued | October 22, 2019 |
| Expiration date | August 31, 2024 |
| Address | St. Louis, MO 63132 |
| Receiving water | Tributary to River Des Peres |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Schoenberger Creek-Mississippi River (HUC 071401010403) |
| SIC | 3728 – Aircraft Parts And Equipment |
| Other EPA IDs (FRS) | RCRA handler MOD006283808; ICIS-AIR source MO0000002918900009 |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 7Pollutants on file
- 0Under a numeric limit
- 7With a violation of any kind
- 0With an effluent exceedance
An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| pH | 0 | 1 | 0 | ||
| Solids, total suspended | 0 | 1 | 0 | ||
| Oil and grease [soxhlet extr.] tot. | 0 | 1 | 0 | ||
| Iron, total recoverable | 0 | 1 | 0 | ||
| Zinc, total recoverable | 0 | 1 | 0 | ||
| Aluminum, total recoverable | 0 | 1 | 0 | ||
| Copper, total recoverable | 0 | 1 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MOR203320.
Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.
Inspections, violations and enforcement
- 2Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| September 6, 2018 | WW Storm Water Construction - Failure to develop any or adequate SWPPP/SWMP | ST6 |
| September 6, 2018 | Permit Violations - Violation Specified in Comment | ST6 |
Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.
Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.
Watch this permit
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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID MOR203320 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.